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@article{MZ_1993__213_1_174532, author = {Georgi S. Popov}, title = {Length spectrum invariants of {Riemannian} manifolds.}, journal = {Mathematische Zeitschrift}, pages = {311--352}, publisher = {mathdoc}, volume = {213}, number = {1}, year = {1993}, zbl = {0804.53068}, url = {http://geodesic.mathdoc.fr/item/MZ_1993__213_1_174532/} }
Georgi S. Popov. Length spectrum invariants of Riemannian manifolds.. Mathematische Zeitschrift, Tome 213 (1993) no. 1, pp. 311-352. http://geodesic.mathdoc.fr/item/MZ_1993__213_1_174532/